Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
INTEREST INCOME
Loans, including fees	$ 142,566	$ 134,079
Investment securities:
Taxable	11,914	12,003
Tax-exempt	2,849	2,040
Dividends	129	160
Loans held for sale	187	131
Other interest income	842	898
Total Interest Income	158,487	149,311
INTEREST EXPENSE
Deposits	11,801	10,727
Short-term borrowings	855	268
Long-term debt	8,252	9,262
Total Interest Expense	20,908	20,257
Net Interest Income	137,579	129,054
Provision for credit losses	4,800	1,530
Net Interest Income After Provision for Credit Losses	132,779	127,524
NON-INTEREST INCOME
Other service charges and fees	12,437	10,750
Service charges on deposit accounts	12,400	12,558
Investment management and trust services	11,808	10,988
Mortgage banking income	4,596	4,030
Investment securities gains, net	1,106	947
Other	4,326	3,864
Total Non-Interest Income	46,673	43,137
NON-INTEREST EXPENSE
Salaries and employee benefits	69,236	69,372
Net occupancy expense	12,663	12,220
Other outside services	5,546	6,056
Data processing	4,286	5,400
Software	4,693	3,921
Equipment expense	3,359	3,371
Professional fees	2,737	2,333
FDIC insurance expense	2,058	2,949
Marketing	1,986	1,624
Other	15,711	13,167
Total Non-Interest Expense	122,275	120,413
Income Before Income Taxes	57,177	50,248
Income taxes	13,797	11,991
Net Income	$ 43,380	$ 38,257
PER SHARE:
Net Income (Basic) (in dollars per share)	$ 0.25	$ 0.22
Net Income (Diluted) (in dollars per share)	0.25	0.22
Cash Dividends (in dollars per share)	$ 0.11	$ 0.09